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Commit 7ca99d81 authored by Herbert Xu's avatar Herbert Xu
Browse files

crypto: rng - Add crypto_rng_set_entropy 



This patch adds the function crypto_rng_set_entropy.  It is only
meant to be used by testmgr when testing RNG implementations by
providing fixed entropy data in order to verify test vectors.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent acec27ff

include/crypto/internal/rng.h

+6 −0
Original line number Diff line number Diff line
@@ -26,4 +26,10 @@ static inline void *crypto_rng_ctx(struct crypto_rng *tfm) 
	return crypto_tfm_ctx(&tfm->base);

}



static inline void crypto_rng_set_entropy(struct crypto_rng *tfm,

					  const u8 *data, unsigned int len)

{

	crypto_rng_alg(tfm)->set_ent(tfm, data, len);

}



#endif

include/crypto/rng.h

+4 −0
Original line number Diff line number Diff line
@@ -32,6 +32,8 @@ struct crypto_rng; 
 *		up a new state, the seed must be provided by the

 *		consumer while invoking this function. The required

 *		size of the seed is defined with @seedsize .

 * @set_ent:	Set entropy that would otherwise be obtained from

 *		entropy source.  Internal use only.

 * @seedsize:	The seed size required for a random number generator

 *		initialization defined with this variable. Some

 *		random number generators does not require a seed
@@ -45,6 +47,8 @@ struct rng_alg { 
			const u8 *src, unsigned int slen,

			u8 *dst, unsigned int dlen);

	int (*seed)(struct crypto_rng *tfm, const u8 *seed, unsigned int slen);

	void (*set_ent)(struct crypto_rng *tfm, const u8 *data,

			unsigned int len);



	unsigned int seedsize;